Transparent Display Case for Models Kits Storage box only. Model kits are not included. RG HG Small Single-Layer Storage Box:Inner dimensions: approx. 23 ×15 × 6 cm RG HG Medium Single-LayerStorage Box:Inner dimensions: approx. 30 × 20 × 6 cm MG Large Single-Layer Storage Box:Inner dimensions: approx. 36 ×27×7.4 cm MG Small Double-Layer Storage Box/ RG HG Sazabi,Zeon Inner dimensions: approx. 25 ×19×10 cm Please note:Model series, scale, and model names (such as HG, RG, MG, Sazabi, Zeon, etc.) are provided for reference only. Due to differences in model designs, accessories, poses, and third-party kits, compatibility may vary. Please check the actual inner dimensions of the storage box carefully and choose the most suitable size based on your model’s measurements. All three storage boxes come with 3 layers of foam: Bottom protective foam Middle storage foam Top protective foam Small Single-Layer BoxSuitable for smaller RG / HG kits with fewer accessories(Due to the compact size, instruction manuals cannot fit inside.) Medium Single-Layer BoxSuitable for most RG, HG, MGSD kits,and some MG kits with fewer accessories RG Sazabi / Zeong BoxSuitable for bulkier RG / HG kits,such as Sazabi, Zeong, etc.(Instruction manuals cannot fit inside.)